text: The College occupies a complex of six buildings on the northeastern corner of the Berkeley campus. Completed in 1917, Gilman Hall, where plutonium was identified in 1941, is the oldest of the buildings. Pimentel Hall, one of the largest lecture halls on campus, features a revolving stage that can accommodate chemistry demonstrations. The buildings are linked by a network of underground hallways and laboratories. The newest building, Tan Hall, was dedicated in 1997.  A new building, Healthcock Hall, is scheduled to break ground in 2023-24.